(Plot: River Person and Gaster both help Sans in the fight against Frisk because they watched everything. Chara is also giving Sans extra HP somehow. River Person's assistance is why the mouth in Phase 3 looks like Last Justice Papyrus Phase 3's.) Dialogue: Phase 0 - * kid...i don't know how. but that face. that face you're makin'...it's telling me something that shouldn't be possible. it's sayin', you've k!lled me hundreds of times. well then. if that's true. i guess we really never were friends. let's get to it, then. sorry old lady. but i don't think promises matter in a time like this. Phase 1 - * it's a horrible day. timelines shatter, flowers hide...on days like these, monsters like you...Shouldn't even exist. Phase 1.5 - * wow. you got me. but. you see. you have determination. when you k!lled...i went to alphys. she gave me new determination that won't melt monsters. it was a prototype, but now, it's done. good luck...demon. Phase 2 - * you aren't going to win. because now, i will make you feel what i probably felt. endless pain. Phase 2.5 - * that's it. time for a special attack i made just now. ready? Phase 2.75 - * what's happening? why am i...wait...no...but i thought he was...huh...ok then...g...r...it's time. Phase 3 - * kid, you've made a horrible, horrible mistake. Phase 3.25 - * huh. guess that's it, huh? just...don't say you weren't warned now...or the other hundreds of times. Phase 3.5: * huh. well, look at that. i feel like my soul has long fallen apart. but yet, i still live on. alright, kid. let's just start. Phase 4: * you will really not like what's next. Phase 4.5: * what the... Phase 4.75: * i feel like i'm immortal...so now... Phase 5: * it's time for your demise. Phase 5.5: * what the...those...those are...past me's...the attacks i used in phases 1-3...helping me? Phase 5.75: * ok then. it's time kid. Phase 6: * see ya in h3ll. Phase 6.5: * you can't hit me in this state, pal. guess you'd better run. Phase 7: * hahahah...i won't take any slashes, no matter what you do. Phase 8: * there we go. two bones for blocking. go ahead, try and hit me. you will just waste your efforts. you will? i meant you'll. something ain't right. Phase 9: GREETINGS, HUMAN. * Yes, hello. IT IS I. THE MAN WHO SPEAKS IN HANDS. YOU'VE MET MY FRIEND, THE MYSTERY MAN. I, W.D. GASTER. * And I, the River Person... * SHALL STRIKE YOU DOWN. Phase 10: * what the...heh...jeez, you two did a lot of damage. whatever. let's just get to the point. Phase 11: * a file? ...undertale. i live in a game? well, that's new. *Cue absorption* heya, kid. ready for your worst time yet? after all...I AM UNDERTALE!!! Phase 11.5: * no...after all of that...you still won? i guess i'll just accept my life as your puppet then. i know i can't win. after all...if ya can't beat 'em...you'll have to join 'em eventually...and at that day...i'll see ya. (Sans dusts.)
Phase 1 music by me! WOOOOOOOOO-
